﻿/*
   Copyright 2012 University of Southampton

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ServiceProcess;
using System.Diagnostics;
using System.IO;

namespace uk.ac.soton.ses
{
    class HDCMetadataSyncService: ServiceBase
    {
        HDCFileSystemWatcher materials_fsw = null;

        FileStream fs =null;
        TextWriterTraceListener fsTraceListener = null;

        public HDCMetadataSyncService()
        {

                //Configure service
                this.ServiceName = "HDCMetadataSyncService";
        }
        protected override void OnStart(string[] args)
        {
            //We need to configure logging everytime the service starts
            //as we unconfigure it when we stop
            string binDirectory = Path.GetDirectoryName(System.Reflection.Assembly.GetAssembly(typeof(HDCMetadataSyncService)).Location);
            if (Directory.Exists(binDirectory))
            {
                //Configure logging
                string logPath = Path.Combine(binDirectory, "HDCMetadataSyncService.log");
                this.fs = new FileStream(logPath, FileMode.Append, FileAccess.Write, FileShare.Read);
                this.fsTraceListener = new TextWriterTraceListener(this.fs);
                Trace.AutoFlush = true;
                Trace.Listeners.Add(this.fsTraceListener);
            }
            else
            {
                throw new Exception("Could not find logging folder");
            }

            //Start the watcher
            HDCConfigurationOptions configOptions = HDCConfiguration.GetConfigurationOptions();

            HDCFileSystemWatcher.Message("----",TraceLevel.Error);
            HDCFileSystemWatcher.Message(string.Format("Starting watcher with folder {0}", configOptions.FileSystemWatcherOptions.LocalPath),TraceLevel.Error);
            this.materials_fsw = new HDCFileSystemWatcher(configOptions.FileSystemWatcherOptions);
        }

        protected override void OnStop()
        {
            HDCFileSystemWatcher.Message("Shutting down",TraceLevel.Error);
            this.materials_fsw.Dispose();
            Trace.Close();
            this.fs.Close();
        }

    }
}
